Initialize
using Plots
gr()Plots.GRBackend()Lines
A simple line plot of the columns.
plot(Plots.fakedata(50, 5), w=3)
Functions, adding data, and animations
Plot multiple functions. You can also put the function first, or use the form `plot(f,
xmin, xmax)` where f is a Function or AbstractVector{Function}.Get series data: x, y = plt[i]. Set series data: plt[i] = (x,y). Add to the series with push!/append!.
Easily build animations. (convert or ffmpeg must be available to generate the animation.) Use command gif(anim, filename, fps=15) to save the animation.
p = plot([sin, cos], zeros(0), leg=false)
anim = Animation()
for x = range(0, stop=10π, length=100)
push!(p, x, Float64[sin(x), cos(x)])
frame(anim)
endParametric plots
Plot function pair (x(u), y(u)).
plot(sin, (x->begin
sin(2x)
end), 0, 2π, line=4, leg=false, fill=(0, :orange))
Colors
Access predefined palettes (or build your own with the colorscheme method). Line/marker colors are auto-generated from the plot's palette, unless overridden. Set the z argument to turn on series gradients.
y = rand(100)
plot(0:10:100, rand(11, 4), lab="lines", w=3, palette=:grays, fill=0, α=0.6)
scatter!(y, zcolor=abs.(y .- 0.5), m=(:heat, 0.8, Plots.stroke(1, :green)), ms=10 * abs.(y .- 0.5) .+ 4, lab="grad")
Global
Change the guides/background/limits/ticks. Convenience args xaxis and yaxis allow you to pass a tuple or value which will be mapped to the relevant args automatically. The xaxis below will be replaced with xlabel and xlims args automatically during the preprocessing step. You can also use shorthand functions: title!, xaxis!, yaxis!, xlabel!, ylabel!, xlims!, ylims!, xticks!, yticks!
using Statistics
y = rand(20, 3)
plot(y, xaxis=("XLABEL", (-5, 30), 0:2:20, :flip), background_color=RGB(0.2, 0.2, 0.2), leg=false)
hline!(mean(y, dims=1) + rand(1, 3), line=(4, :dash, 0.6, [:lightgreen :green :darkgreen]))
vline!([5, 10])
title!("TITLE")
yaxis!("YLABEL", :log10)
Images
Plot an image. y-axis is set to flipped
import FileIO
path = download("http://juliaplots.org/PlotReferenceImages.jl/Plots/pyplot/0.7.0/ref1.png")
img = FileIO.load(path)
plot(img)
Arguments
Plot multiple series with different numbers of points. Mix arguments that apply to all series (marker/markersize) with arguments unique to each series (colors). Special arguments line, marker, and fill will automatically figure out what arguments to set (for example, we are setting the linestyle, linewidth, and color arguments with line.) Note that we pass a matrix of colors, and this applies the colors to each series.
ys = Vector[rand(10), rand(20)]
plot(ys, color=[:black :orange], line=(:dot, 4), marker=([:hex :d], 12, 0.8, Plots.stroke(3, :gray)))
Build plot in pieces
Start with a base plot...
plot(rand(100) / 3, reg=true, fill=(0, :green))
and add to it later.
scatter!(rand(100), markersize=6, c=:orange)
Histogram2D
histogram2d(randn(10000), randn(10000), nbins=20)
Line types
linetypes = [:path :steppre :steppost :sticks :scatter]
n = length(linetypes)
x = Vector[sort(rand(20)) for i = 1:n]
y = rand(20, n)
plot(x, y, line=(linetypes, 3), lab=map(string, linetypes), ms=15)
Line styles
styles = filter((s->begin
s in Plots.supported_styles()
end), [:solid, :dash, :dot, :dashdot, :dashdotdot])
styles = reshape(styles, 1, length(styles))
n = length(styles)
y = cumsum(randn(20, n), dims=1)
plot(y, line=(5, styles), label=map(string, styles), legendtitle="linestyle")
Marker types
markers = filter((m->begin
m in Plots.supported_markers()
end), Plots._shape_keys)
markers = reshape(markers, 1, length(markers))
n = length(markers)
x = (range(0, stop=10, length=n + 2))[2:end - 1]
y = repeat(reshape(reverse(x), 1, :), n, 1)
scatter(x, y, m=(8, :auto), lab=map(string, markers), bg=:linen, xlim=(0, 10), ylim=(0, 10))
Bar
x is the midpoint of the bar. (todo: allow passing of edges instead of midpoints)
bar(randn(99))
Histogram
histogram(randn(1000), bins=:scott, weights=repeat(1:5, outer=200))
Subplots
Use the layout keyword, and optionally the convenient @layout macro to generate arbitrarily complex subplot layouts.
l = @layout([a{0.1h}; b [c; d e]])
plot(randn(100, 5), layout=l, t=[:line :histogram :scatter :steppre :bar], leg=false, ticks=nothing, border=:none)
Adding to subplots
Note here the automatic grid layout, as well as the order in which new series are added to the plots.
plot(Plots.fakedata(100, 10), layout=4, palette=[:grays :blues :heat :lightrainbow], bg_inside=[:orange :pink :darkblue :black])
using Random
Random.seed!(111)
plot!(Plots.fakedata(100, 10))
Open/High/Low/Close
Create an OHLC chart. Pass in a list of (open,high,low,close) tuples as your y argument. This uses recipes to first convert the tuples to OHLC objects, and subsequently create a :path series with the appropriate line segments.
n = 20
hgt = rand(n) .+ 1
bot = randn(n)
openpct = rand(n)
closepct = rand(n)
y = OHLC[(openpct[i] * hgt[i] + bot[i], bot[i] + hgt[i], bot[i], closepct[i] * hgt[i] + bot[i]) for i = 1:n]
ohlc(y)
Annotations
The annotations keyword is used for text annotations in data-coordinates. Pass in a tuple (x,y,text) or a vector of annotations. annotate!(ann) is shorthand for plot!(; annotation=ann). Series annotations are used for annotating individual data points. They require only the annotation... x/y values are computed. A PlotText object can be build with the method text(string, attr...), which wraps font and color attributes.
y = rand(10)
plot(y, annotations=(3, y[3], Plots.text("this is #3", :left)), leg=false)
annotate!([(5, y[5], Plots.text("this is #5", 16, :red, :center)), (10, y[10], Plots.text("this is #10", :right, 20, "courier"))])
scatter!(range(2, stop=8, length=6), rand(6), marker=(50, 0.2, :orange), series_annotations=["series", "annotations", "map", "to", "series", Plots.text("data", :green)])
Custom Markers
A Plots.Shape is a light wrapper around vertices of a polygon. For supported backends, pass arbitrary polygons as the marker shapes. Note: The center is (0,0) and the size is expected to be rougly the area of the unit circle.
verts = [(-1.0, 1.0), (-1.28, 0.6), (-0.2, -1.4), (0.2, -1.4), (1.28, 0.6), (1.0, 1.0), (-1.0, 1.0), (-0.2, -0.6), (0.0, -0.2), (-0.4, 0.6), (1.28, 0.6), (0.2, -1.4), (-0.2, -1.4), (0.6, 0.2), (-0.2, 0.2), (0.0, -0.2), (0.2, 0.2), (-0.2, -0.6)]
x = 0.1:0.2:0.9
y = 0.7 * rand(5) .+ 0.15
plot(x, y, line=(3, :dash, :lightblue), marker=(Shape(verts), 30, RGBA(0, 0, 0, 0.2)), bg=:pink, fg=:darkblue, xlim=(0, 1), ylim=(0, 1), leg=false)
Contours
Any value for fill works here. We first build a filled contour from a function, then an unfilled contour from a matrix.
x = 1:0.5:20
y = 1:0.5:10
f(x, y) = begin
(3x + y ^ 2) * abs(sin(x) + cos(y))
end
X = repeat(reshape(x, 1, :), length(y), 1)
Y = repeat(y, 1, length(x))
Z = map(f, X, Y)
p1 = contour(x, y, f, fill=true)
p2 = contour(x, y, Z)
plot(p1, p2)
Pie
x = ["Nerds", "Hackers", "Scientists"]
y = [0.4, 0.35, 0.25]
pie(x, y, title="The Julia Community", l=0.5)
3D
n = 100
ts = range(0, stop=8π, length=n)
x = ts .* map(cos, ts)
y = (0.1ts) .* map(sin, ts)
z = 1:n
plot(x, y, z, zcolor=reverse(z), m=(10, 0.8, :blues, Plots.stroke(0)), leg=false, cbar=true, w=5)
plot!(zeros(n), zeros(n), 1:n, w=10)
Groups and Subplots
group = rand(map((i->begin
"group $(i)"
end), 1:4), 100)
plot(rand(100), layout=@layout([a b; c]), group=group, linetype=[:bar :scatter :steppre], linecolor=:match)
Polar Plots
Θ = range(0, stop=1.5π, length=100)
r = abs.(0.1 * randn(100) + sin.(3Θ))
plot(Θ, r, proj=:polar, m=2)
Heatmap, categorical axes, and aspect_ratio
xs = [string("x", i) for i = 1:10]
ys = [string("y", i) for i = 1:4]
z = float((1:4) * reshape(1:10, 1, :))
heatmap(xs, ys, z, aspect_ratio=1)
Layouts, margins, label rotation, title location
using Plots.PlotMeasures
plot(rand(100, 6), layout=@layout([a b; c]), title=["A" "B" "C"], title_location=:left, left_margin=[20mm 0mm], bottom_margin=10px, xrotation=60)
Animation with subplots
The layout macro can be used to create an animation with subplots.
l = @layout([[a; b] c])
p = plot(plot([sin, cos], 1, leg=false), scatter([atan, cos], 1, leg=false), plot(log, 1, xlims=(1, 10π), ylims=(0, 5), leg=false), layout=l)
anim = Animation()
for x = range(1, stop=10π, length=100)
plot(push!(p, x, Float64[sin(x), cos(x), atan(x), cos(x), log(x)]))
frame(anim)
endSpy
For a matrix mat with unique nonzeros spy(mat) returns a colorless plot. If mat has various different nonzero values, a colorbar is added. The colorbar can be disabled with legend = nothing.
using SparseArrays
a = spdiagm(0 => ones(50), 1 => ones(49), -1 => ones(49), 10 => ones(40), -10 => ones(40))
b = spdiagm(0 => 1:50, 1 => 1:49, -1 => 1:49, 10 => 1:40, -10 => 1:40)
plot(spy(a), spy(b), title=["Unique nonzeros" "Different nonzeros"])
Magic grid argument
The grid lines can be modified individually for each axis with the magic grid argument.
x = rand(10)
p1 = plot(x, title="Default looks")
p2 = plot(x, grid=(:y, :olivedrab, :dot, 1, 0.9), title="Modified y grid")
p3 = plot(deepcopy(p2), title="Add x grid")
xgrid!(p3, :on, :cadetblue, 2, :dashdot, 0.4)
plot(p1, p2, p3, layout=(1, 3), label="", fillrange=0, fillalpha=0.3)
Framestyle
The style of the frame/axes of a (sub)plot can be changed with the framestyle attribute. The default framestyle is :axes.
scatter(fill(randn(10), 6), fill(randn(10), 6), framestyle=[:box :semi :origin :zerolines :grid :none], title=[":box" ":semi" ":origin" ":zerolines" ":grid" ":none"], color=permutedims(1:6), layout=6, label="", markerstrokewidth=0, ticks=-2:2)
Lines and markers with varying colors
You can use the line_z and marker_z properties to associate a color with each line segment or marker in the plot.
t = range(0, stop=1, length=100)
θ = (6π) .* t
x = t .* cos.(θ)
y = t .* sin.(θ)
p1 = plot(x, y, line_z=t, linewidth=3, legend=false)
p2 = scatter(x, y, marker_z=+, color=:bluesreds, legend=false)
plot(p1, p2)
Portfolio Composition maps
see: http://stackoverflow.com/a/37732384/5075246
using Random
Random.seed!(111)
tickers = ["IBM", "Google", "Apple", "Intel"]
N = 10
D = length(tickers)
weights = rand(N, D)
weights ./= sum(weights, dims=2)
returns = sort!((1:N) + D * randn(N))
portfoliocomposition(weights, returns, labels=permutedims(tickers))
Ribbons
Ribbons can be added to lines via the ribbon keyword; you can pass a tuple of arrays (upper and lower bounds), a single Array (for symmetric ribbons), a Function, or a number.
plot(plot(0:10; ribbon=(LinRange(0, 2, 11), LinRange(0, 1, 11))), plot(0:10; ribbon=0:0.5:5), plot(0:10; ribbon=sqrt), plot(0:10; ribbon=1))
Histogram2D (complex values)
n = 10000
x = exp.(0.1 * randn(n) .+ randn(n) .* im)
histogram2d(x, nbins=(20, 40), show_empty_bins=true, normed=true, aspect_ratio=1)
Unconnected lines using missing or NaN
Missing values and non-finite values, including NaN, are not plotted. Instead, lines are separated into segments at these values.
(x, y) = ([1, 2, 2, 1, 1], [1, 2, 1, 2, 1])
plot(plot([rand(5); NaN; rand(5); NaN; rand(5)]), plot([1, missing, 2, 3], marker=true), plot([x; NaN; x .+ 2], [y; NaN; y .+ 1], arrow=2), plot([1, 2 + 3im, Inf, 4im, 3, -Inf * im, 0, 3 + 3im], marker=true), legend=false)
Lens
A lens lets you easily magnify a region of a plot. x and y coordinates refer to the to be magnified region and the via the inset keyword the subplot index and the bounding box (in relative coordinates) of the inset plot with the magnified plot can be specified. Additional attributes count for the inset plot.
begin
plot([(0, 0), (0, 0.9), (1, 0.9), (2, 1), (3, 0.9), (80, 0)], legend=:outertopright)
plot!([(0, 0), (0, 0.9), (2, 0.9), (3, 1), (4, 0.9), (80, 0)])
plot!([(0, 0), (0, 0.9), (3, 0.9), (4, 1), (5, 0.9), (80, 0)])
plot!([(0, 0), (0, 0.9), (4, 0.9), (5, 1), (6, 0.9), (80, 0)])
lens!([1, 6], [0.9, 1.1], inset=(1, bbox(0.5, 0.0, 0.4, 0.4)))
end
Array Types
Plots supports different Array types that follow the AbstractArray interface, like StaticArrays and OffsetArrays.
begin
$(Expr(:using, :($(Expr(:., :StaticArrays))), :($(Expr(:., :OffsetArrays)))))
sv = SVector{10}(rand(10))
ov = OffsetVector(rand(10), -2)
plot([sv, ov], label=["StaticArray" "OffsetArray"])
end- Supported arguments:
annotations,arrow,aspect_ratio,background_color,background_color_inside,background_color_legend,background_color_outside,background_color_subplot,bar_width,bins,bottom_margin,camera,color_palette,colorbar,colorbar_entry,colorbar_title,contour_labels,discrete_values,fill_z,fillalpha,fillcolor,fillrange,flip,foreground_color,foreground_color_axis,foreground_color_border,foreground_color_grid,foreground_color_legend,foreground_color_subplot,foreground_color_text,framestyle,grid,gridalpha,gridlinewidth,gridstyle,group,guide,guidefontcolor,guidefontfamily,guidefonthalign,guidefontrotation,guidefontsize,guidefontvalign,html_output_format,inset_subplots,label,layout,left_margin,legend,legendfontcolor,legendfontfamily,legendfonthalign,legendfontrotation,legendfontsize,legendfontvalign,legendtitle,levels,lims,line_z,linealpha,linecolor,linestyle,linewidth,link,margin,marker_z,markeralpha,markercolor,markershape,markersize,markerstrokealpha,markerstrokecolor,markerstrokewidth,match_dimensions,normalize,orientation,overwrite_figure,polar,primary,projection,quiver,ribbon,right_margin,scale,series_annotations,seriesalpha,seriescolor,seriestype,show,show_empty_bins,size,smooth,subplot,subplot_index,tick_direction,tickfontcolor,tickfontfamily,tickfonthalign,tickfontrotation,tickfontsize,tickfontvalign,ticks,title,titlefontcolor,titlefontfamily,titlefonthalign,titlefontrotation,titlefontsize,titlefontvalign,top_margin,weights,window_title,x,xdiscrete_values,xerror,xflip,xforeground_color_axis,xforeground_color_border,xforeground_color_grid,xforeground_color_text,xgrid,xgridalpha,xgridlinewidth,xgridstyle,xguide,xguidefontcolor,xguidefontfamily,xguidefonthalign,xguidefontrotation,xguidefontsize,xguidefontvalign,xlims,xlink,xscale,xtick_direction,xtickfontcolor,xtickfontfamily,xtickfonthalign,xtickfontrotation,xtickfontsize,xtickfontvalign,xticks,y,ydiscrete_values,yerror,yflip,yforeground_color_axis,yforeground_color_border,yforeground_color_grid,yforeground_color_text,ygrid,ygridalpha,ygridlinewidth,ygridstyle,yguide,yguidefontcolor,yguidefontfamily,yguidefonthalign,yguidefontrotation,yguidefontsize,yguidefontvalign,ylims,ylink,yscale,ytick_direction,ytickfontcolor,ytickfontfamily,ytickfonthalign,ytickfontrotation,ytickfontsize,ytickfontvalign,yticks,z,zdiscrete_values,zflip,zforeground_color_axis,zforeground_color_border,zforeground_color_grid,zforeground_color_text,zgrid,zgridalpha,zgridlinewidth,zgridstyle,zguide,zguidefontcolor,zguidefontfamily,zguidefonthalign,zguidefontrotation,zguidefontsize,zguidefontvalign,zlims,zlink,zscale,ztick_direction,ztickfontcolor,ztickfontfamily,ztickfonthalign,ztickfontrotation,ztickfontsize,ztickfontvalign,zticks - Supported values for linetype:
:contour,:heatmap,:image,:path,:path3d,:pie,:scatter,:scatter3d,:shape,:straightline,:surface,:volume,:wireframe - Supported values for linestyle:
:auto,:dash,:dashdot,:dashdotdot,:dot,:solid - Supported values for marker:
:+,:auto,:circle,:cross,:diamond,:dtriangle,:heptagon,:hexagon,:hline,:ltriangle,:none,:octagon,:pentagon,:rect,:rtriangle,:star4,:star5,:star6,:star7,:star8,:utriangle,:vline,:x,:xcross
(Automatically generated: 2020-03-19T20:06:21.779)